/*
 * Copyright 2006 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.gwt.sample.dynatable.client;

import com.google.gwt.user.client.rpc.IsSerializable;

public class TimeSlot implements IsSerializable, Comparable
{

    private final static transient String[] DAYS = new String[]{
            "Sun", "Mon", "Tues", "Wed", "Thurs", "Fri", "Sat"};

    public TimeSlot()
    {
    }

    public TimeSlot(int zeroBasedDayOfWeek, int startMinutes, int endMinutes)
    {
        this.zeroBasedDayOfWeek = zeroBasedDayOfWeek;
        this.startMinutes = startMinutes;
        this.endMinutes = endMinutes;
    }

    public int compareTo(Object o)
    {
        TimeSlot other = (TimeSlot) o;
        if (zeroBasedDayOfWeek < other.zeroBasedDayOfWeek)
        {
            return -1;
        }
        else if (zeroBasedDayOfWeek > other.zeroBasedDayOfWeek)
        {
            return 1;
        }
        else
        {
            if (startMinutes < other.startMinutes)
            {
                return -1;
            }
            else if (startMinutes > other.startMinutes)
            {
                return 1;
            }
        }

        return 0;
    }

    public int getDayOfWeek()
    {
        return zeroBasedDayOfWeek;
    }

    public String getDescription()
    {
        return DAYS[zeroBasedDayOfWeek] + " " + getHrsMins(startMinutes) + "-"
                + getHrsMins(endMinutes);
    }

    public int getEndMinutes()
    {
        return endMinutes;
    }

    public int getStartMinutes()
    {
        return startMinutes;
    }

    public void setDayOfWeek(int zeroBasedDayOfWeek)
    {
        if (0 <= zeroBasedDayOfWeek && zeroBasedDayOfWeek < 7)
        {
            this.zeroBasedDayOfWeek = zeroBasedDayOfWeek;
        }
        else
        {
            throw new IllegalArgumentException("day must be in the range 0-6");
        }
    }

    public void setEndMinutes(int endMinutes)
    {
        this.endMinutes = endMinutes;
    }

    public void setStartMinutes(int startMinutes)
    {
        this.startMinutes = startMinutes;
    }

    private String getHrsMins(int mins)
    {
        int hrs = mins / 60;
        boolean am = true;
        if (hrs > 12)
        {
            hrs -= 12;
        }

        int remainder = mins % 60;

        return hrs + ":"
                + (remainder < 10 ? "0" + remainder : String.valueOf(remainder));
    }

    private int endMinutes;
    private int startMinutes;
    private int zeroBasedDayOfWeek;
}
